Free X12 824 tool
Validate an X12 824 Application Advice before it enters production
Paste the actual 824. Shipment Sentry checks the interchange, functional group and transaction envelope, then applies 824-specific required-segment checks with exact locations.
Direct answer
Direct answer
An X12 824 Application Advice validator should verify delimiters, ISA/IEA controls, GS/GE controls, ST/SE controls and counts before checking BGN, N1, OTI, TED, SE. Those segments carry the original transaction reference, application acceptance code and implementation-level error detail. Passing structural validation proves internal consistency, not acceptance by a specific trading partner.
Why a parser is not enough
A parser can display a 824 while still missing a control match, transaction count or business segment. The free tool separates deterministic X12 defects from requirements that belong to a partner implementation guide, so a team does not mistake generic syntax for production readiness.
What the control should check
- 01ISA13 matches IEA02 and IEA01 matches the functional-group count.
- 02GS06 matches GE02 and every GS has a corresponding GE.
- 03ST02 matches SE02 and SE01 counts ST through SE inclusively.
- 04The transaction identifies itself as 824, not another X12 set in a misleading filename.
- 05Required 824 segments are present: BGN, N1, OTI, TED, SE.
- 06Every finding includes a code, location, evidence class and remediation.
Working example
BGN*11*ADV-8842*20260718*1530~OTI*TE*TN*000184***20260718*1530*42*0001~TED*024*Invalid item identifier~This excerpt shows the transaction-specific core, not a complete interchange. The validator expects a full ISA through IEA document and reports the exact segment position for each defect.
Failure modes worth catching
- A regenerated trailer contains a different control number from its header.
- SE01 excludes ST or SE and is off by one.
- A required business segment is absent even though the interchange parses.
- The file passes a generic schema but violates the receiving partner's current implementation guide.
Put it into the dispatch workflow
- 1Load the 824 without customer secrets or unrelated files.
- 2Fix envelope and count errors first because they can hide later structure.
- 3Fix missing 824 segments and re-run the same document.
- 4Compare identifiers, quantities and dates with the originating business record.
- 5Use the API gate for repeat checks and retain evidence only when your policy requires it.
Questions
Implementation answers
Can this validator guarantee a trading partner accepts my 824?
No. It catches deterministic envelope and supported transaction-set defects. Partner-specific situational rules remain controlling.
Is the uploaded EDI retained?
Anonymous runs store a content hash and findings, not the raw document. Signed-in users can explicitly opt into encrypted retention.
Can I validate automatically?
Yes. The authenticated gate API accepts a unique idempotency key and returns cleared or blocked with structured findings.
Sources and limits
Reviewed 2026-07-18. Public references cannot establish every partner-specific rule. Current implementation guides and agreements remain controlling.
Keep investigating